"use strict";
const path = require("path");
const defaultSettings = require("./src/settings.js");
const webpack = require('webpack');//webpack is not defined
const CompressionPlugin = require('compression-webpack-plugin');//CompressionPlugin is not defined
const zlib = require('zlib') // zlib is not defined
function resolve(dir) {
  return path.join(__dirname, dir);
}

const name = defaultSettings.title || "vue Admin Template"; // page title

// If your port is set to 80,
// use administrator privileges to execute the command line.
// For example, Mac: sudo npm run
// You can change the port by the following methods:
// port = 9528 npm run dev OR npm run dev --port = 9528
const port = process.env.port || process.env.npm_config_port || 9528; // dev port

// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
  /**
   * You will need to set publicPath if you plan to deploy your site under a sub path,
   * for example GitHub Pages. If you plan to deploy your site to https://foo.github.io/bar/,
   * then publicPath should be set to "/bar/".
   * In most cases please use '/' !!!
   * Detail: https://cli.vuejs.org/config/#publicpath
   */
  publicPath: "./",
  outputDir: "dist",
  assetsDir: "static",
  lintOnSave: process.env.NODE_ENV === "development",
  productionSourceMap: false,
  devServer: {
    proxy: {
      // [process.env.VUE_APP_BASE_API]: {
      //   target: "http://localhost:8099", // 请求的第三方接口地址
      //   ws: true,
      //   changeOrigin: true, // 请求跨域时，需配置此项
      //   pathRewrite: {
      //     // 路径重写,替换target中的请求地址
      //     ["^" + process.env.VUE_APP_BASE_API]: "",
      //   },
      // },
      //代理跨域设置
      [process.env.VUE_APP_BASE_API_TX]: {
        target: "http://127.0.0.1:2111", // 请求的第三方接口地址 http://192.168.0.103:2111/
        ws: true,
        changeOrigin: true, // 请求跨域时，需配置此项
        // pathRewrite: {
        //   // 路径重写,替换target中的请求地址
        //   ["^" + process.env.VUE_APP_BASE_API_TX]: "",
        // },
        //第一种方法
        onProxyReq: function (proxyReq, req, res, options) {
          if (req.body) {
            alert(req.body);
            console.log(req.body);
            const bodyData = JSON.stringify(req.body);
            // incase if content-type is application/x-www-form-urlencoded -> we need to change to application/json
            proxyReq.setHeader("Content-Type", "application/json");
            proxyReq.setHeader("Content-Length", Buffer.byteLength(bodyData));
            // stream the content
            proxyReq.write(bodyData);
          }
        },
      },
    },

    port: port,
    open: true,
    overlay: {
      warnings: false,
      errors: true,
    },
    // 在本地通过设置域名访问vue项目时出现Invalid Host header错误  解决方法：

    // 1、vue-cli2创建的项目，在webpack.dev.conf.js中的devServer对象中添加如下设置：
    // // webpack.dev.conf.js devServer: { disableHostCheck: true, }

    // 2、vue-cli3创建的项目，在项目根目录下创建vue.config.js文件
    // // vue.config.js module.exports = { devServer: { disableHostCheck: true } }
    disableHostCheck: true,
    // before: require("./mock/mock-server.js"),
  },
  configureWebpack: {
    // provide the app's title in webpack's name field, so that
    // it can be accessed in index.html to inject the correct title.
    name: name,
    resolve: {
      alias: {
        "@": resolve("src"),
      },
    },

    plugins: [
      new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
      // 下面两项配置才是 compression-webpack-plugin 压缩配置
      // 压缩成 .gz 文件
      new CompressionPlugin({
        filename: '[path][base].gz',
        algorithm: 'gzip',
        test: /\.js$|\.css$|\.html$/,
        threshold: 10240,
        minRatio: 0.8
      }),
      // 压缩成 .br 文件，如果 zlib 报错无法解决，可以注释这段使用代码，一般本地没问题，需要注意线上服务器会可能发生找不到 zlib 的情况。
      new CompressionPlugin({
        filename: '[path][base].br',
        algorithm: 'brotliCompress',
        test: /\.(js|css|html|svg)$/,
        compressionOptions: {
          params: {
            [zlib.constants.BROTLI_PARAM_QUALITY]: 11
          }
        },
        threshold: 10240,
        minRatio: 0.8
      })
    ],
    // 开启分离 js
    optimization: {
      runtimeChunk: 'single',
      splitChunks: {
        chunks: 'all',
        maxInitialRequests: Infinity,
        minSize: 20000,
        cacheGroups: {
          vendor: {
            test: /[\\/]node_modules[\\/]/,
            name (module) {
              // get the name. E.g. node_modules/packageName/not/this/part.js
              // or node_modules/packageName
              const packageName = module.context.match(/[\\/]node_modules[\\/](.*?)([\\/]|$)/)[1]
              // npm package names are URL-safe, but some servers don't like @ symbols
              return `npm.${packageName.replace('@', '')}`
            }
          }
        }
      }
    }

  },
  chainWebpack(config) {
    // it can improve the speed of the first screen, it is recommended to turn on preload
    config.plugin("preload").tap(() => [
      {
        rel: "preload",
        // to ignore runtime.js
        // https://github.com/vuejs/vue-cli/blob/dev/packages/@vue/cli-service/lib/config/app.js#L171
        fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/],
        include: "initial",
      },
    ]);

    // when there are many pages, it will cause too many meaningless requests
    config.plugins.delete("prefetch");

    // set svg-sprite-loader
    config.module.rule("svg").exclude.add(resolve("src/icons")).end();
    config.module
      .rule("icons")
      .test(/\.svg$/)
      .include.add(resolve("src/icons"))
      .end()
      .use("svg-sprite-loader")
      .loader("svg-sprite-loader")
      .options({
        symbolId: "icon-[name]",
      })
      .end();

    config.when(process.env.NODE_ENV !== "development", (config) => {
      config
        .plugin("ScriptExtHtmlWebpackPlugin")
        .after("html")
        .use("script-ext-html-webpack-plugin", [
          {
            // `runtime` must same as runtimeChunk name. default is `runtime`
            inline: /runtime\..*\.js$/,
          },
        ])
        .end();
      config.optimization.splitChunks({
        chunks: "all",
        cacheGroups: {
          libs: {
            name: "chunk-libs",
            test: /[\\/]node_modules[\\/]/,
            priority: 10,
            chunks: "initial", // only package third parties that are initially dependent
          },
          elementUI: {
            name: "chunk-elementUI", // split elementUI into a single package
            priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
            test: /[\\/]node_modules[\\/]_?element-ui(.*)/, // in order to adapt to cnpm
          },
          commons: {
            name: "chunk-commons",
            test: resolve("src/components"), // can customize your rules
            minChunks: 3, //  minimum common number
            priority: 5,
            reuseExistingChunk: true,
          },
        },
      });
      // https:// webpack.js.org/configuration/optimization/#optimizationruntimechunk
      config.optimization.runtimeChunk("single");
    });
  },
};
